Qhob Pumping Technology
Lub tshuab no siv cov twj tso kua mis los yog lub twj tso kua mis kom zoo thauj cov khoom sib xyaw los ntawm cov kav xa mus rau qhov chaw pouring. Tsis tsuas yog nws ceev thiab ua haujlwm- txuag, tab sis nws kuj yog qhov kev xaiv zoo tshaj plaws rau kev thauj mus los thiab nchuav cov pob zeb loj hauv - cov phiaj xwm ntim thiab cov tsev siab - nce siab.
Cov twj tso kua mis, raws li cov cuab yeej tseem ceeb rau kev thauj khoom ua tau zoo, tau muab faib ua extrusion -hom thiab piston- hom, nrog rau yav tom ntej feem ntau siv. Raws li kev txav mus los, cov twj tso kua mis tuaj yeem muab cais ntxiv rau hauv qhov chaw nres tsheb, trailer-mounted, thiab tsheb thauj khoom-mounted hom. Ntawm cov no, cov tsheb thauj khoom-mounted qhob twj tso kua mis yog tus kheej-propelled, ua kom yooj yim hloov ntawm qhov chaw tsim kho. Nruab nrog peb -theem telescopic lossis articulated tso boom, lawv pab kom xa ncaj qha ntawm cov pob zeb mus rau qhov chaw nchuav, ua kom cov txheej txheem tsim kho tau zoo.
Piston twj tso kua mis feem ntau muaj hopper, hydraulic thooj voos kheej kheej thiab pistons, lub tog raj kheej ua vaj tse, thiab kev faib tawm valve. Kev faib tawm valve, ib qho tseem ceeb, muaj ntau yam xws li rooj vag -hom thiab yeeb nkab- hom, ob qho tib si muab kev ua tau zoo dua thiab siv dav. Cov kav xa dej tuaj yeem xaiv tau los ntawm cov kav hlau, cov roj hmab hoses, lossis cov yas hoses raws li xav tau. Cov kav hlau yog feem ntau 3 meters ntev rau ib ntu, nrog rau cov lus qhia tshwj xeeb ntawm φ100, 125, thiab 150mm. Lawv tau ua tiav los ntawm lub luj tshib ntawm ntau lub kaum ntse ntse thiab sib txawv -section tapered kav los txhim kho cov yeeb nkab layout thiab txo cov dej tsis kam hauv cov kav dej.
Rau cov twj tso kua mis, slump yuav tsum tsis pub tsawg tshaj 100mm, nrog zoo flowability thiab tsim nyog loj aggregate. Txhawm rau tiv thaiv kev sib cais thiab kev thaiv thaum lub sij hawm siv, cov twj tshwj xeeb xws li dej- txo cov neeg ua hauj lwm thiab cov yas yas yuav tsum tau ntxiv kom ntseeg tau tias kev sib xyaw ua ke ntawm cov pob zeb sib xyaw hauv qab lub twj tso kua mis siab. Tsis tas li ntawd, kev sib xyaw ua ke tsim nyog xws li cov hmoov tshauv ya ya pab txo cov teeb meem xws li kev sib cais, los ntshav, thiab cov kav dej thaiv thaum lub sij hawm tso pob zeb.
Txawm li cas los xij, cov kev coj ua tam sim no hauv qee thaj tsam nthuav tawm cov qauv sib xyaw ua ke tsis zoo rau cov pob zeb ua pob zeb, nrog cov qauv tsis yooj yim rau cov xwm txheej tshwj xeeb, ua rau muaj kev sib tsoo ntau zaus. Tsis tas li ntawd, kev ua haujlwm ntawm cov twj tso kua mis tuaj yeem hloov pauv raws li cov xwm txheej ib puag ncig tshwj xeeb -txhua qhov teeb meem xav tau kev tshawb fawb sai thiab daws teeb meem.
Qhov siab tshaj plaws aggregate loj yuav tsum tuav ib tug tshwj xeeb piv piv rau lub twj tso kua mis txoj kab uas hla. Rau qhov siab tshaj 50 meters, qhov sib piv no yuav tsum tsis pub tshaj 1: 2.3 rau cov pob zeb crushed thiab 1: 2.5 rau kev sib sau ua ke. Rau cov twj tso kua mis ntawm 50 thiab 100 meters, qhov sib piv tsim nyog yog 1: 3 txog 1: 4. Thaum lub twj tso kua mis siab tshaj 100 meters, qhov piv ntawm 1: 4 mus rau 1: 5 yog pom zoo. Tsis tas li ntawd, ob qho tib si ntxhib thiab nplua zoo yuav tsum ua raws li cov kev cai ntawm lub teb chaws tam sim no tus qauv "Standard Specification for Quality and Test Methods of Sand and Stone for Ordinary Concrete" (JGJ 52-2006). Coarse aggregate yuav tsum tsis tu ncua graded, nrog rau cov ntsiab lus ntawm koob - zoo li tus thiab flake-particles tsis tshaj 10%. Fine aggregate yuav tsum zoo dua yog cov xuab zeb nruab nrab, nrog cov xuab zeb dhau los ntawm 0.315 mm sieve tsis tsawg dua 15%.
Thaum sib tov twj tso kua mis, cov dej siv yuav tsum ua raws li lub teb chaws tam sim no tus qauv "Standard for Water Used in Concrete" (JGJ 63-2006). Tsis tas li ntawd, cov khoom siv sib xyaw ua ke rau hauv cov twj tso kua mis yuav tsum ua raws li cov qauv hauv lub tebchaws, suav nrog "Admixtures for Concrete" (GB 8076-2008). Tsis tas li ntawd, qhov tsim nyog ntxiv ntawm ya tshauv cov txiaj ntsig tau siv cov pob zeb, tab sis nws qhov zoo yuav tsum ua tau raws li cov qauv hauv tebchaws tam sim no xws li "Fly Ash for Cement and Concrete" (GB/T 1596-2005). Thaum kawg, kev tsim vaj tsev sib xyaw ua ke yog qhov tseem ceeb, yuav tsum muaj qhov tsim nyog ntawm txhua yam khoom kom tau raws li kev siv dej thiab kev tsim kho.
Cov ntsiab lus ntawm cement yuav tsum yog nruab nrab
Rau cov pob zeb uas muaj zog qib xws li C20 txog C60, cov ntsiab lus cement yuav tsum tau tswj ntawm 350 thiab 550 kg / m³.
Admixtures optimizes kev ua tau zoo
Txhawm rau txhim kho cov khoom vaj khoom tsev, txuag cov cement, thiab txo cov nqi, cov khoom siv xws li ya tshauv, slag, lossis zeolite hmoov feem ntau ntxiv. Nco ntsoov tias tag nrho cov cement thiab ntxhia admixture cov ntsiab lus yuav tsum tsis txhob poob qis dua 300 kg / m³.
Sand Ratio Adjustment Ua kom muaj peev xwm ua haujlwm
Txhawm rau ua kom cov pob zeb ua tau zoo, kev sib koom ua ke, thiab dej tuav thaum lub sijhawm thauj mus los, siv, thiab tso, cov xuab zeb sib piv rau cov pob zeb ua pob zeb yog feem ntau 6% siab dua rau cov txheej txheem flowable pob zeb, xws li kwv yees li 38% mus rau 45%.
Aggregate Gradation yuav tsum ua kom tau raws li cov kev xav tau ntawm cov twj tso kua mis thiab lub zog
Qhov loj me me - mus rau - yeeb nkab - txoj kab uas hla yog feem ntau tswj nyob rau hauv cov kab hauv qab no: 1: 2.5 (cobbles), 1: 3 (pob zeb crushed) rau 1: 4, thiab 1: 5.
Dej- sib piv cov cement feem cuam tshuam cov twj tso kua mis
Cov dej - cement ratio yuav tsum tswj ntawm 0.4 thiab 0.6. Yog tias qhov sib piv poob qis dua 0.4, kev siv zog ua haujlwm nce ntau. Hloov pauv, qhov sib piv ntau dua 0.6 ua rau los ntshav, kev sib cais, thiab txheej txheej, zoo ib yam ua rau lub twj tso kua mis tsis zoo.
Ceev faj thaum xaiv cov twj tso kua mis
High- dej ua tau zoo- cov neeg ua haujlwm txo qis ua ke nrog cov retarders, huab cua -entraining agents, thiab cov additives zoo sib xws yog siv los ua cov twj tso kua mis. Cov neeg ua haujlwm no cuam tshuam rau ob qho tib si kev ua haujlwm ntawm pob zeb thiab nws cov khoom tawv tawv, yuav tsum tau ua tib zoo xaiv.
